(19)
(11) EP 1 217 210 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
29.10.2003 Bulletin 2003/44

(43) Date of publication A2:
26.06.2002 Bulletin 2002/26

(21) Application number: 01127080.8

(22) Date of filing: 14.11.2001
(51) International Patent Classification (IPC)7: F04B 7/00, F04B 7/06
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 21.12.2000 JP 2000389001
27.08.2001 JP 2001256391

(71) Applicant: Ikuta, Kazumasa
Yokohama-shi, Kanagawa (JP)

(72) Inventor:
  • Ikuta, Kazumasa
    Yokohama-shi, Kanagawa (JP)

(74) Representative: Rasch, Michael 
Patent- und Rechtsanwälte Lewinsky & Partner GbR Gotthardstrasse 81
80689 München
80689 München (DE)

   


(54) Fluid pump


(57) It is an object of the present invention to provide a fluid suction and discharge device capable of continuously discharging fluid with a predetermined flow rate and pressure continuously sucking the fluid without substantially giving rise to pulsation.
The invention comprises an inner tube (1) rotatably fitted in a fitting hole of the device body, a cylinder (5) slidably fitted into the inner tube (1), and a plurality of through-holes formed in the inner tube (1), wherein when the cylinder (5) is reciprocated in association with rotation of the inner tube (1), and when one of the through-holes of the inner tube (1) is communicated with a suction hole of the device body, the other through-hole of the inner tube is communicated with a discharge hole of the device body, and when fluid is sucked from a communication suction hole thus communicated, fluid is discharged from the discharge hole thus communicated.






Search report